Hi,
Thank you for your patience.
I have attached the sample here that can position a textbox inside the chart as in the image you sent to us. However, positioning problems with textbox inside the chart has been fixed recently. Could you please create an incident in
direct trac so that we could send further details on this?
I have placed the sample and output file in the link below.
http://help.syncfusion.com/samples/XlsIO.Web/F93026/F93026.zipPlease let me know if you have any questions.
Regards,
Geetha